vjw0rm | e3f46470aa9ef52628f741e07db33a6af854693ae2a761d397bf87fbfbe687c9

Analysis

max time kernel
147s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
31-03-2024 03:18

Target

4bbeabc7d902f9f654cfe9c4f51d155d_JaffaCakes118.js
Size

11KB
MD5

4bbeabc7d902f9f654cfe9c4f51d155d
SHA1

04b90a68e3911bc4edcf355c1db4567ae173c601
SHA256

e3f46470aa9ef52628f741e07db33a6af854693ae2a761d397bf87fbfbe687c9
SHA512

ecebe6eeb0848600cc8d4ac6b612ad4f02e5bce7d3f35ed14936508aa987c449a8e8029752bfa0b46ed68661836b99692abedce4175d3a7085aa22e0cb9882e5
SSDEEP

192:GDiOn6F9bg4NuHmcVP0sntG4a3FRUciE8IswHT9xfD8+pLhZx53fAeT7yTK:GDii6FVg4NEnbt7a3F2/EzswH/JIeXyO

Score

10^/10

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm

Blocklisted process makes network request 6 IoCs

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4bbeabc7d902f9f654cfe9c4f51d155d_JaffaCakes118.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4bbeabc7d902f9f654cfe9c4f51d155d_JaffaCakes118.js	wscript.exe

Adds Run key to start application 2 TTPs 1 IoCs

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\6ID7YY2BDP = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\4bbeabc7d902f9f654cfe9c4f51d155d_JaffaCakes118.js\""	wscript.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

Scheduled Task/Job

pid	Process
4840	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 60 wrote to memory of 4840	60	wscript.exe	88
PID 60 wrote to memory of 4840	60	wscript.exe	88

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\4bbeabc7d902f9f654cfe9c4f51d155d_JaffaCakes118.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:60
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\4bbeabc7d902f9f654cfe9c4f51d155d_JaffaCakes118.js
  2⤵
  - Creates scheduled task(s)
  PID:4840